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自然老化 zìrán lǎohuà
busin. weathering ageing
chem. atmospheric aging
dril. unaccelerated aging
oil natural aging; self aging
plast. atmospheric ageing; self ageing; weathering
tech. natural ageing; natural weathering; self-aging; weathering age
自然〔气温〕老化
construct. weather aging
自然老化[时效] zìrán lǎohuà
space natural ageing
自然老化
: 4 phrases in 4 subjects
Mechanic engineering1
Plastics1
Polymers1
Technology1